prerenal azotemia


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Related to prerenal azotemia: postrenal azotemia

non·re·nal az·o·te·mi·a

, prerenal azotemia
nitrogen retention resulting from something other than primary renal disease.

prerenal azotemia

Renal underperfusion Nephrology The most common form of acute renal failure, characterized by ↑ nitrogenous waste, due to ↓ blood flow to the kidney Lab ↑ nitrogenous wastes–eg, creatinine and urea, which act as poisons when they accumulate in the body, damaging tissues and compromising organ function Risk factors ↓ blood volume–eg, dehydration, prolonged vomiting, diarrhea, bleeding, burns, etc; pump failure–eg, CHF, shock, kidney trauma or surgery, renal artery embolism, and other types of renal artery occlusion. See Renal failure.

azotemia

an excess of nitrogen-containing compounds in the blood. See also uremia.

postrenal azotemia
is caused by reduced renal blood flow caused by increased pressure within the renal collecting system, e.g. hydronephrosis and urine retention from a variety of causes.
prerenal azotemia
is due to extrarenal causes that reduce renal blood flow and glomerular filtration, e.g. dehydration, shock, reduced cardiac output, decreased plasma albumin osmotic pressure.
primary renal azotemia
results from loss of renal functional parenchyma.
References in periodicals archive ?
He also developed fecal incontinence, oliguria and prerenal azotemia secondary to decrease fluid intake and gastrointestinal losses.
Differential diagnosis of prerenal azotemia from acute tubular necrosis and prediction of recovery by Doppler ultrasound.
Background: Renal hypoperfusion causing prerenal azotemia can be from intravascular volume depletion, a change in vascular resistance or reduced cardiac output.
Mortality rate was 26%; human T-lymphotropic virus (HTLV-1) infection, chronic alcoholism, eosinopenia, sepsis, and prerenal azotemia on admission were poor prognostic factors.
11 Hypoxic States Cardiovascular collapse (shock) from whatever cause, acute congestive heart failure, acute myocardial infarction and other conditions characterized by hypoxemia have been associated with lactic acidosis and may also cause prerenal azotemia.